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Discussion Starter #1
So I ran into madmaxx on another board and was helping answer some questions for him. So as a sign of good will I have decided to post the info he wante here so we have something productive (ain't I just a nice guy)

ok so here are some pics of my now dormant 1974 h1/ fzr bike. These are the only pics I have and the bike is in the back of pop's garage and not easy to get to:

















Ok, this is probably the slowest project I have ever worked on. I have been building this bike since 2002 and haven't worked on it yet in 2007. That being said here is all the info I can muster:

Rear end:
The rear is a stock 1988-89 fzr400 swingarm I found in a junkyard. The pivot bolt is the same size as the h1 as is the swingarm width. I removed a set of washers from the end caps and the swinger bolted in with the stock h1 mount. For the shocks I took the arm to a friend of mine who tig welded (the arm is aluminum) the dual shock mounts. In retorspect I should have monoshocked it but I wanted the look of dual shocks. If I were to monoshock it I would have cut the mid brace top shock mount out of an fzr600 and welded it into the h1 frame (the fzr600 subframe is steel). The fzr600s have a very similar swingarm but it is steel which makes adding the dual shock mounts easier if you want to go that way. Howvever you are going to need the fzr400 rear wheel and brake as it is narrower and the chain line is almost spot on for an h1 (it is spot on for an h2 - between 1/4 and 1/8 inch off for an h1). Instead of the 160 rear the fzr400 runs you want a 150 and either deck the sprocket carrier or use an custom motor sprocket to make up the diff (sprocket specalists). I used 2002 r6 rear sets because the rear master is the same and the rearset brackets have the mounts for the master built on to them. Easy as pie. All of this should work for an early h1 and early h2 as well. The fzr400 arm is too short for a later h2 and makes the bike look funny. You will have middle pipe clearance issues with this setup so be prepared to run custom chambers or hack existing aftermarket ones. Stock exhaust is too heavy and valuable to waste time modifying it to work. If you can used wirges pipes are junk and cheap (worse performes than stock pipes) - therefore you can hack them if you are a DIY. If you want to pay someone tomcat on the kawi board will make you a set for around $700 or so (don't quote me on that) and the bike will scream.

Front end:
I did it the hard way. I had a machinist grind and press out the h1 stem and then I put it in the fzr600 lower clamp. I got the whole front end from a wrecking yard for $100 so I didn't mind the expirmentation. The 1994 FZR600 front end has a steel lower clamp so my h1 stem was welded in after it was installed in the clamp. After that I bored the top of the clamp to slip over the larger h1 stem and bolted her on. The end result looks like kawasaki did it from the factory. Since then someone else has figured out how to adapt a gsxr front end using only a spacer for the top (the bottom bearing surface of the fzr600 and the h1 take the same bearings, that is why I chose it - the gsxr front end swap is common on fzrs). Search kawasakitriplesworldwide.com and you'll find the post on it.

Maxx - there is a guy in sweeden with a really trick 1970 h1 with h2 motor and GSXR upsidedown forks and monoshock rear - looks badass. You can e-mail me any time with questions and trouble shooting, I am pretty helpful when it come to this end of things.

hope the air is clear.
 

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Thanks Geeto for maybe getting my foot back in the door.....

Ok folks.... here is the deal....
I bought a basket case '70 H1 for $500. No papers, different tank, smoked center cylinder, etc.
I just finished rebuilding a KZ650 motor for a friend/family member that fried an FZR600 motor last year. I did all the work for free because he is relations.... but in exchange, I get his first born son and all the '94 FZR600 parts I could ever want.... so I took everything (except his first born... he pooped too much)!!!!
Swing arm, forks, wheels, clipons with controls, foot controls, etc.

So.... now for the modding.

Thanks Geeto... you are super smart!!!
 

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Thanks Geeto for maybe getting my foot back in the door.....

Ok folks.... here is the deal....
I bought a basket case '70 H1 for $500. No papers, different tank, smoked center cylinder, etc.
I just finished rebuilding a KZ650 motor for a friend/family member that fried an FZR600 motor last year. I did all the work for free because he is relations.... but in exchange, I get his first born son and all the '94 FZR600 parts I could ever want.... so I took everything (except his first born... he pooped too much)!!!!
Swing arm, forks, wheels, clipons with controls, foot controls, etc.

So.... now for the modding.

Thanks Geeto... you are super smart!!!
 

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looks cool, looks lightwieght wieght (anything is compared to my bike haha).What are you going to do for the wheels?

22/m
1980 Honda CB750
1972 Oldsmobile 442
 

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looks cool, looks lightwieght wieght (anything is compared to my bike haha).What are you going to do for the wheels?

22/m
1980 Honda CB750
1972 Oldsmobile 442
 

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You are VERY lucky to find an FZR400 in a junk yard! Those swingarms go for high dollar on fleabay.
The front end looks easy peasy. I can figure that out.
I will run this FZR600 swingarm and have Sprocket Specialties cut me an offset sprocket. I will make something work for a 160 tire.

Looks like you are using stock Kawi controls and switches. I am gonna wire up the FZR stuff to work.

My buddy just finished mocking up ZX636 suspension on a KZ1000.
Pretty trick setup he's got!!!!!

The Madmaxxy pad, now comes with a months supply of mytol.
 

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You are VERY lucky to find an FZR400 in a junk yard! Those swingarms go for high dollar on fleabay.
The front end looks easy peasy. I can figure that out.
I will run this FZR600 swingarm and have Sprocket Specialties cut me an offset sprocket. I will make something work for a 160 tire.

Looks like you are using stock Kawi controls and switches. I am gonna wire up the FZR stuff to work.

My buddy just finished mocking up ZX636 suspension on a KZ1000.
Pretty trick setup he's got!!!!!

The Madmaxxy pad, now comes with a months supply of mytol.
 

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geeto,

did you steal that front wheel off of the artist formerly known as prince?

texy
 

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geeto,

did you steal that front wheel off of the artist formerly known as prince?

texy
 

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Discussion Starter #10
quote:
geeto,

did you steal that front wheel off of the artist formerly known as prince?

texy
The 94 FZR600 I got the front end from was green with purple wheels - If you watched the first batman movie this was the joker's colors. Ugly as anything.

If I had it to do all over again I would seriously just put the entire h1 motor into the fzr600 frame. The original FZR 600s have steel frames (the 400s are all alumiumn except the subframe) which makes it easier to mount. I know of three guys who have done this with 1986 600 ninja's for the same reason (steel frame) and a guy in the netherlands with one in a zxr400 frame. This would make it closer to being a street replica of the two stroke MOTOGP machines I grew up watching. I figured it out and it is actually less work putting the engine in and fitting the oil tank and motor CDI in the fzr600 frame than it is bracing the h1 frame and adapting the suspension components - it is just more welding work.

The differences between the fzr400 and 600 rears are the swingarm is steel, the brakes are different, and the 600 wheel is slightly wider without the chain line changing. The first year fzr600 (1988?) should have a rim that is the same as the fzr400s. If you wanted to keep your rear wheel, scrambler 73 on the kawi triples board used just the arm with a stock drum brake rear and was ablet to get it all to work together fine with little mods. His bike is badass and weighs in at 313lbs with an h2 750 motor.

I happen to like the kawi stock controls which is why I kept them. The wiring is pretty easy on an h1 as long as you leave the engine harness alone.
 

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Discussion Starter #11
quote:
geeto,

did you steal that front wheel off of the artist formerly known as prince?

texy
The 94 FZR600 I got the front end from was green with purple wheels - If you watched the first batman movie this was the joker's colors. Ugly as anything.

If I had it to do all over again I would seriously just put the entire h1 motor into the fzr600 frame. The original FZR 600s have steel frames (the 400s are all alumiumn except the subframe) which makes it easier to mount. I know of three guys who have done this with 1986 600 ninja's for the same reason (steel frame) and a guy in the netherlands with one in a zxr400 frame. This would make it closer to being a street replica of the two stroke MOTOGP machines I grew up watching. I figured it out and it is actually less work putting the engine in and fitting the oil tank and motor CDI in the fzr600 frame than it is bracing the h1 frame and adapting the suspension components - it is just more welding work.

The differences between the fzr400 and 600 rears are the swingarm is steel, the brakes are different, and the 600 wheel is slightly wider without the chain line changing. The first year fzr600 (1988?) should have a rim that is the same as the fzr400s. If you wanted to keep your rear wheel, scrambler 73 on the kawi triples board used just the arm with a stock drum brake rear and was ablet to get it all to work together fine with little mods. His bike is badass and weighs in at 313lbs with an h2 750 motor.

I happen to like the kawi stock controls which is why I kept them. The wiring is pretty easy on an h1 as long as you leave the engine harness alone.
 

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Hey geeto, where can I find a site that does stuff like this all day long?
There are a LOT of people who do it on that triple site.... but is there a site JUST for "streetfighter" stuff.
Ya know....
Old style engine and frame with new style suspension?


I dragged the H1 home. It is COOOOOL!
I love the H1a's. They are beautiful. This one will have more tricks than a magician!!!!
I haven't even tried sliding the swingarm in the frame.... I am in the process of rebuilding a KZ650 and don't want parts everywhere.....
Maybe next week!

_______________
The Madmaxxy pad, now comes with a months supply of mytol.
 

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Discussion Starter #13
quote:
Hey geeto, where can I find a site that does stuff like this all day long?
There are a LOT of people who do it on that triple site.... but is there a site JUST for "streetfighter" stuff.
Ya know....
Old style engine and frame with new style suspension?


I dragged the H1 home. It is COOOOOL!
I love the H1a's. They are beautiful. This one will have more tricks than a magician!!!!
I haven't even tried sliding the swingarm in the frame.... I am in the process of rebuilding a KZ650 and don't want parts everywhere.....
Maybe next week!

_______________
The Madmaxxy pad, now comes with a months supply of mytol.
As far as I have found there isn't a site dedicated to old bikes with new suspensions. Technically they are not streetfighters because streetfighters are modern race replicas (GSXR, CBR, ZX, YZF) that have all the plastic taken off and a lot a speed parts put on and setup to go as fast as possible stop light to stop light. These old bikes with modern suspensions really don't have a classification although I have heard of people call them modernized cafe racers or "specials" (british term for hopped up bike). I find there are actually quite a few on this site that are doing what we are doing but they don't chime in usually because there is so much (sooooooooooo much) cb350 chatter and not enough talk about stuff like this. I have to find it but somewhere I have pics of my buddy's bike when we put a ducati 916 front end on a 1975 kz900 (he was also running a gsxr swingarm with a large by huge 200 marchensei (sp?) wheel we got from when confederate closed the first time) so I know there are others out there doing it, just getting in touch with them is the hard part.

The one thing I didn't like about tomcats site is most of them are focused on restorations, although cody (scrambler 73) does great work and his cafe kh500/h2 is one of the most badass bikes I have seen.

Early h1s are one of the coolest bikes in my opinion. I have a 1971 frame that I am thinking of using as a basis for "the ultimate triple", A bike that looks semi stock but is so trick you don't notice it at first. The specs I have so far are:
1971 h1 frame (braced),
1970 peacock gray bodywork (best looking triple I think),
1973-1976 500 swingarm (longer) with s2-s3 rear hub (lightest rear drum - I may also use an early gs rear wheel with vintage disc brake instead),
1973-76 500 disc brake front (with ex500 caliper conversion) in 1972 disc brake triple trees.
Black anodized excel rims,
1972 H2 750 engine (ported of course with a backcut transmission), tomcat pipes,
1973 h1 cdi system,
and that is about it. I am still not sure if I want to go full period cafe and do clip ons, rear sets, and a bubble back seat or do superbike low bars, stock pegs and a stock seat and rear fender. I am leaning to the period cafe thing but it would be cool to have another Q-ship style sleeper.
 

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quote:
Hey geeto, where can I find a site that does stuff like this all day long?
There are a LOT of people who do it on that triple site.... but is there a site JUST for "streetfighter" stuff.
Ya know....
Old style engine and frame with new style suspension?
Not a website, but there's a Japanese Magazine called Road Rider laregely dedicated to new models, "modern restored" Japanese bikes (old bikes w/ modern suspensions), classic Superbikes, Bozo Zoku customs and the literally hundreds of tiny shops all over Japan that work on them.

'Course its hard to find, like $20 special order from a good magazine shop and all of the text is in Japanese, but the pics are worth it.

Link:
http://www.roadrider.jp/index02.html



http://www.roadrider.jp/RR_mook/custom_Folder/custom2006_Folder/custom2005_002.html

Honda go sideways!
 

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Discussion Starter #16
for some reason the japanese love doing this kind of stuff (building balls to the wall customs out of old bikes).MY cousin who works for nintendo and lived in tokyo for 5 years used to send me all sorts of groovy stuff. It's like amreicans and muscle cars, a big part of thier heritage.

The bozokou are badass btw, there is a great book on them out there, not to get off the subject.
 

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The swingarm fit with no problems.
The front end will need some minor mods to get it to fit.

This rocks!!!!
Now all I need.... a motor and the rest of the parts from the previous owner!!!!

_______________
The Madmaxxy pad, now comes with a months supply of mytol.
 

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Discussion Starter #18
are you going to mono-shock it? personally I would. Go find a wrecked fzr600 frame and cut the subframe and shock mounts out of it (they are steel) and weld them into the frame. also when you get the engine check the chain line - you may have to have one of the drag racers fab you a motor sprocket.

looks like a good start.
 

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Yes, it will be a monoshock.
I could cut out the FZR's shock mount.... but my buddy welded his own.
I think I will like the look better doing it that way.

as for a motor sprocket, I will either have Sprocket Specialties make me one, or have a machinest make me one.
The sprocket is the least of my worries.

Affording parts for a '70 H1... THAT is something to worry about!!!



Edited by - Madmaxxy on Mar 28 2007 11:31:49 AM
 

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Bringing it back from the dead. I could have just started a new thread but most of the info is in this thread so I figured I'll just start here.

I'm trying to decide whether or not to do a monoshock on my H1/H2 project.

Geeto, I have an FZR600 swingarm and I had the whole bike at one point so I'm kicking myself for trashing it but would that be the way you would go? FZ 400 swingarms are tough to find and expensive when you do find them so as good as an option as it is I dont feel like waiting around for one to pop up.

Plan at the moment for a little background, H1 frame, H2 engine, probably R6 front suspension because I have a set of Dymag magnesium 5 spoke R6 wheels, rear swingarm is open to just about whatever will fit depending on if I can get the chain to align with those wheels.

Ideas?
 
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